An article Hydrogen Deuterium Isotopic Labeling Study of Enantioselective Hydrogenation of (E)-2-Methyl-2-butenoic Acid over a Cinchonidine-Modified Pd/C Catalyst WOS:000485218200011 published article about ALPHA,BETA-UNSATURATED CARBOXYLIC-ACIDS; HETEROGENEOUS ASYMMETRIC HYDROGENATION; 2-METHYL-2-PENTENOIC ACID; (E)-ALPHA-PHENYLCINNAMIC ACID; LIGAND ACCELERATION; MODIFIED PALLADIUM; MODIFIED PD/TIO2; SUBSTRATE; MECHANISM; SOLVENT in [Sugimura, Takashi; Tomatsuri, Satoshi; Fujita, Morifumi; Okamoto, Yasuaki] Univ Hyogo, Grad Sch Mat Sci, Kamigori, Hyogo 6781297, Japan in 2019, Cited 37. The Name is (E)-2-Methylbut-2-enoic acid. Through research, I have a further understanding and discovery of 80-59-1. Name: (E)-2-Methylbut-2-enoic acid
In the enantioselecitve hydrogenation of (E)-2-methyl-2-butenoic acid (1) over a cinchonidine-modified Pd/C catalyst, the addition of hydrogen preferentially proceeds from the Re-Si enantioface of the C=C double bond of 1 to yield (S)-2-methylbutanoic acid ((S)-3). Double bond migration of 1 takes place under the reaction conditions and is followed by immediate hydrogenation to yield 3 in a poor enantiomeric purity. Deuterium labeling experiments at 0.1 MPa and 1.9 MPa of D-2 verified the previous assumption of competitive double bond migration. The combination of isotopic labeling experiments and chiral analysis revealed that the double bond migration of 1 proceeds with the same enantiofacial differentiation as the hydrogenation of 1. Thus, interaction of 1 with cinchonidine adsorbed on the Pd surface may control the configuration of the double bond migration and the hydrogenation.
Name: (E)-2-Methylbut-2-enoic acid. About (E)-2-Methylbut-2-enoic acid, If you have any questions, you can contact Sugimura, T; Tomatsuri, S; Fujita, M; Okamoto, Y or concate me.
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Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles